Just pulled the trigger on two Salter creams, wild rose & Indian sandalwood.
Why I went with Salters in the end? After lots of research I found the following: TOBS scents are 100% synthetic, Trumpers and T&H are full of parabens, Simpsons has vanilla in which I dont want, Vulfix does have some bad reviews online from sources I trust and DR Harris is more expensive than all the others, I can get two Salter creams for £2 more than one Harris. Salters creams are not only one of the cheapest but also contain actual oils (geranium oil & sandalwood oil, respectively), no parabens or over the top colourants and seem to enjoy positive reviews across the board.
I'll update once I've tried them.